Playchoice 10 Monitor Problem(s) Where to start

gamingsince80s

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Hello All! I have a single monitor playchoice that I bought about a year ago. Ever since I bought it the monitor has had some problems- nothing too major, but annoying. I searched the forum and didn't see any posts about the same problem that I have.

Ever since I bought it the monitor would look okay for the first five minutes of play time and then the color would change. Recently the color looks off from the time I start it and doesn't change like it used to. It seems like it is losing the red color because everything has a green tint to it. It also has about 5 light-colored horizontal lines.

Where do I start to diagnose/fix or adjust this thing or should I just look for a new monitor since this one has some medium burn-in?

I have attached some pictures. For some reason in the Mario picture the monitor looks like it's the correct color(s), but that is only the way it looks in the picture and not how it looks in person.

Any advice or recommendations is appreciated.

Thanks!
-Chris
 

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I think your green is shorting on, not the red falling out, because Mario still has red in him. If the lines are green that you can see, that's what's going on. You may be able to adjust it out with the knobs on the back of the monitor neckboard (one for each color)... if not, you've probably got either a color transistor locking on on the neck board, or the tube has an intermittant short in it.
 
I think your green is shorting on, not the red falling out, because Mario still has red in him. If the lines are green that you can see, that's what's going on. You may be able to adjust it out with the knobs on the back of the monitor neckboard (one for each color)... if not, you've probably got either a color transistor locking on on the neck board, or the tube has an intermittant short in it.

I have attached two pictures is either one of those the "neckboard?" If so which pic and which knob is for the green that I should adjust?

Thanks for the help!
 

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O.K., your first picture is the neckboard. The two left knobs are for the Red, the two right are for the Blue, and the two in the middle are for the green.

CAREFULLY, so you don't break the tube (suckage!)... turn the two middle ones slightly to the left. You may want to turn them back and forth a little bit in case they've got a dirty spot in them. CAREFUL though. Watch the screen while you do it and see how it looks.
 
O.K., your first picture is the neckboard. The two left knobs are for the Red, the two right are for the Blue, and the two in the middle are for the green.

CAREFULLY, so you don't break the tube (suckage!)... turn the two middle ones slightly to the left. You may want to turn them back and forth a little bit in case they've got a dirty spot in them. CAREFUL though. Watch the screen while you do it and see how it looks.

Ok, cool. I'll mess with them and let you know what happens.

Thanks!!
 
O.K., your first picture is the neckboard. The two left knobs are for the Red, the two right are for the Blue, and the two in the middle are for the green.

CAREFULLY, so you don't break the tube (suckage!)... turn the two middle ones slightly to the left. You may want to turn them back and forth a little bit in case they've got a dirty spot in them. CAREFUL though. Watch the screen while you do it and see how it looks.


At first I barely moved the two center knobs back and forth- no change. I then turned them a little bit at a time- no change. The best that the image on the monitor would look was if I turned both knobs all the way to the left.

When I went to mess with them the knob on the left was already turned all the way to left which tells me that this has been a problem with the previous owner and they already tried to get around it by turning that knob all the way.

In a previous post you said the horizontal lines were probably green, I looked at them closely and they are green. I thought there were only about five horizontal lines, but it appears to be about 10-12.

What do I do from here?

Thanks!
 
I'll have to respectfully disagree with Phetishboy, I've found in my personal experience that color problems almost never get fixed with a capkit. Capkit won't hurt though, and you probably need to do it anyways.

You've probably got either a bad 'green' transistor on your neckboard or down on the chassis, or a short in the tube. Basically the green is on 100% when it shouldn't be, so either the tube is doing that, or the monitor board is. You may possibly have a bad 'pot' too, but since you have the green retrace lines that's almost always either the transistor shorted on or the tube shorted on.

Probably not an easy fix... but try capping it first and see if that fixes it, hopefully I'm wrong!
 
The pics look like your brightness is up too high. Try adjusting the Screen knob on the flyback. It shoud take care of the horizontal line issue once you turn it down a bit. Also adjust the brightness knob which is located by the volume knob. I think that would improve the colors at least a little bit.
 
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